package com.yx1996.web.servlet;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.yx1996.service.UserService;

/**
 * Servlet implementation class CheckUsernameServlet
 */
public class ChechUsernameServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ChechUsernameServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		String username = request.getParameter("username");
		UserService userService = new UserService();
		boolean isExist = false;
		try {
			isExist = userService.findUserByUsername(username);
		} catch (SQLException e) {
			e.printStackTrace();
		}
		String json = "{\"isExist\":"+isExist+"}";
		response.getWriter().write(json);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		this.doGet(request, response);
	}

}
